Notifies the component that all objects with surface following this
call are expected to be solid 3D objects. The component will perform quick check
that the surface is actually closed to detect input errors. If the surface of an
object was not closed the component will perform operations were possible using
more relaible but slower methods

If false (true is the default), the
IPick.GetItem*() methods use only
graphic information to increase performance at expense of some precision loss.
The non-default value is recommended only for high frequency programmatic point
or object selection

When true, the algorithm which detects the surface point under a specified screen point uses a combination of graphic and geometric functionality to calculate the point precisely. Experiment with this option to tune in the precision/performance tradeoff